Patent · US Expired

Apertured laminate web

US7371919B1 · kind B1 · utility

56Cited by

11References

10Claims

0Family size

Assignee

The Procter & Gamble Company · US

Inventors

Ludwig Busam · Idstein, DE
Michael Divo · Friedrichsdorf, DE
Andreas Flohr · Kronberg, DE

Key dates

Filing date	Apr 27, 1999
Grant date	May 13, 2008
Priority date	—
Expiry date	May 30, 2021

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2305/20
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

An apertured laminate web which may be used as a topsheet on a disposable absorbent article, such as a diaper. The laminate web is formed of a liquid pervious first material and a liquid pervious second material attached to the first material. The first material has an effective open area of at least about 10% and a plurality of apertures with an effective size of at least than 0.2 square millimeters. The second material has an effective open area of at least about 10% and a plurality of apertures with an effective size of at least 0.2 square millimeters. The apertures of the second material are aligned with the apertures of the first material. The second material preferably has a hydrophilicity which is greater than the hydrophilicity of the first material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.